Movie Clip rotation

[martinb7]

Hi, how do you make a movie clip rotate using actionscript?

e.g

A speed dial:

when the speed increases, how would you make the pointer turn to point to the the numbers around the side matching the speed in a dynamic text box??

Any ideas?

Thanx

Martin

 

[wangbar]

Rotation works in degrees so this will rotate a clip 10 degrees clockwise:

myMovieClip._rotation+=10

To make it line up with a dial or display just work out how far round the dial you need it to go in degrees and add the value on.

 

[martinb7]

yes, but how do you match the rotation to the numbers on the speedometer if the value is coming from a text box??

 

[wangbar]

You just have to work out where the numbers lie on the circumference of the circle in relation to the value you have is the textbox.

For instance - you have numbers 1 to 10 as he values that may appear in the textbox and ten points around the circle that forms your readout.

360 degrees in a circle so to go to the right value on the dial you'd have this code:

meter._rotation=myTextBoxValue*(360/10)

If it's a constant readout you'd have to put the whole thing into a frame by frame event:

this.onEnterFrame=function(){
meter._rotation=myTextBoxValue*(360/10)
}